EP0276755A1 - Elément chauffant électrique pour appareil de chauffage de l'air ambiant - Google Patents

Elément chauffant électrique pour appareil de chauffage de l'air ambiant Download PDF

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Publication number
EP0276755A1
EP0276755A1 EP88100838A EP88100838A EP0276755A1 EP 0276755 A1 EP0276755 A1 EP 0276755A1 EP 88100838 A EP88100838 A EP 88100838A EP 88100838 A EP88100838 A EP 88100838A EP 0276755 A1 EP0276755 A1 EP 0276755A1
Authority
EP
European Patent Office
Prior art keywords
heater element
heating conductor
mica
bent
bands
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88100838A
Other languages
German (de)
English (en)
Other versions
EP0276755B1 (fr
Inventor
Giansante Antoniazzi
Claudio Fattorel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
I.R.C.A. S.P.A. INDUSTRIA RESISTENZE CORAZZATE ED
Original Assignee
Irca SpA Industria Resistenze Corazzate Ed Affini
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Irca SpA Industria Resistenze Corazzate Ed Affini filed Critical Irca SpA Industria Resistenze Corazzate Ed Affini
Priority to AT88100838T priority Critical patent/ATE63801T1/de
Publication of EP0276755A1 publication Critical patent/EP0276755A1/fr
Application granted granted Critical
Publication of EP0276755B1 publication Critical patent/EP0276755B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base

Definitions

  • This invention relates to an electrical resistance heater element for room air heaters.
  • An object of the invention is to provide an electrical resistance heater element for application to fans in order to generate a flow of hot air.
  • a further object of the invention is to provide an electrical resistance heater element which has lower air resistance and results in higher overall efficiency than known elements used for the same purpose.
  • a further object of the invention is to provide an electrical resistance heater element which is of simple and economical construction.
  • an electrical resistance heater element for room air heaters comprising a heating conductor mounted on an insulating support which is itself mounted on a support flange to which can be fitted an electric motor provided with a fan which passes a stream of air across the heating conductor, characterised in that the insulating support is of cylindrical form with its axis parallel to the direction of the stream of the air to be heated and consists of at least one pair of mica bands kept superposed by a fillet fixed to brackets for connection to said support flange, and further characterised in that the heating conductor consists of at least one wire of resistive material bent in zig-zag manner to form a plurality of radial loops, with their inner portions bent over and retained between the two mica bands and emerging radially from the inner band through apertures provided therein.
  • the electrical resistance heater element comprises essentially a heating conductor 1 of resistive wire, and an insulating support 2 which represents both the insulating support member for the resistive wire 1 and the member for connecting the assembly to an electric motor 3 provided with a conventional fan 4 for generating a stream of air to be heated.
  • the insultating support 2 comprises two side-by-side pairs of superposed cylindrical mica bands 5,5 ⁇ held together by two U-shaped metal connecting fillets 6 which extend along the circular extension of the bands 5,5 ⁇ .
  • the two fillets 6 adjoin each other along their centre line and are retained by four support brakes 8 positioned 90° apart.
  • the fillets 6 are connected to each bracket 8 by a pair of appendices 7 provided on the bracket and passing through the facing flanges of each fillet 6 and the two mica bands 5,5 ⁇ held therebetween, to be locked in their final position by being bent over.
  • the four brackets 8 are fixed to a support flange 9 constructed of insulating material, such as polymide, and the electric motor 3 provided with the fan 4 is fitted to this flange.
  • a lug 10 is also fitted to the said support flange 9 for connection to the electicity supply mains.
  • the heating conductor 1 consists of an electric wire of resistive material bent in zig-zag manner to form two sets of radial "loops" disposed in two separate planes orthogonal to the axis of the insultating cylindrical support 2.
  • the outer portion of the loops of each set can be either bent through 180° inwards towards the adjacent set (see Figure 3) or can remain extended, according to the electrical power of the resistive conductor used, whereas the inner portion of each loop is bent firstly though 90° and is then bent in the opposite direction so as to produce a portion 11 substantially orthogonal to the plane of the loops followed by a portion 12 which lies at an angle to the portion 11.
  • the orthogonal portion 11 is positioned between the two mica bands 5,5 ⁇ of each pair, whereas the inner end portion 12 is passed through the inner mica band 5 ⁇ through apertures 13 provided for this purpose.
  • the operation of the heater element according to the invention is conventional.
  • the electric motor 3 When connected to the electricity supply mains the electric motor 3 rotates the fan 4 to pass a stream of air across two sets of loops, so heating it.
  • the heater element according to the invention has considerable advantages over known heater element, and in particular: - an improved efficiency as its cylindrical form with its axis parallel to the air stream results in low air resistance, - simpler construction as the resistance element 1 is secured to the mica support 2 merely by bending the loops over without using screws, rivets or the like, - the possibility of using the same support and the same construction system for heating elements of different power, which differ from each other only by the outer portion of the loops being either bent over or not, this bending being carried out as a single operation for all the loops. It should be noted that the facility for bending the loops over means that for equal performance a greater useful space can be obtained within the insulating support.

Landscapes

  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
EP88100838A 1987-01-27 1988-01-21 Elément chauffant électrique pour appareil de chauffage de l'air ambiant Expired - Lifetime EP0276755B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88100838T ATE63801T1 (de) 1987-01-27 1988-01-21 Elektrisches heizelement fuer zimmerluftheizger|te.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8761905U IT211702Z2 (it) 1987-01-27 1987-01-27 Elemento riscaldante a resistenza elettrica per riscaldatori d'ambienti ad aria.
IT6190587U 1987-01-27

Publications (2)

Publication Number Publication Date
EP0276755A1 true EP0276755A1 (fr) 1988-08-03
EP0276755B1 EP0276755B1 (fr) 1991-05-22

Family

ID=11292619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88100838A Expired - Lifetime EP0276755B1 (fr) 1987-01-27 1988-01-21 Elément chauffant électrique pour appareil de chauffage de l'air ambiant

Country Status (5)

Country Link
US (1) US4794227A (fr)
EP (1) EP0276755B1 (fr)
AT (1) ATE63801T1 (fr)
DE (1) DE3862870D1 (fr)
IT (1) IT211702Z2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0719073A2 (fr) * 1994-12-08 1996-06-26 Ingo Schehr Elément chauffant électrique pour le chauffage d'un fluide gazeux

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8701993U1 (de) * 1987-02-10 1987-04-16 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Heizkörper mit Abgriffteil
US6003242A (en) * 1998-01-09 1999-12-21 Carley; Joseph C. Portable heater
DE10111000A1 (de) * 2001-03-07 2002-09-19 Microhellix Systems Gmbh Heizleiterwendel zum Erwärmen eines strömenden gasförmigen Mediums sowie elektrisches Widerstandsheizelement
US6884974B2 (en) * 2003-03-21 2005-04-26 Tutco, Inc. Mica board electrical resistance wire heater, subassemblies, components, and methods of assembly
DE202005012394U1 (de) * 2005-08-06 2005-12-08 Microhellix Systems Gmbh Elektrisches Heizmodul zur Luftstromerwärmung, insbesondere in Fahrzeugen
DE102007006058B4 (de) * 2007-02-02 2009-11-26 Microhellix Systems Gmbh Elektrisches Heizmodul zur Luftstromerwärmung, insbesondere zur Heizung und Belüftung von Sitzen
US7926222B2 (en) * 2008-09-25 2011-04-19 Molnar Christopher J Insect eradication system and method
ITRM20080516A1 (it) * 2008-09-30 2010-04-01 Irca S P A Ind Resistenze Co Razzate E Affi Riscaldatore elettrico per asciugabiancheria
IT1394328B1 (it) * 2009-05-06 2012-06-06 Irca Spa Riscaldatore elettrico per asciugabiancheria
US9386634B2 (en) * 2011-04-15 2016-07-05 Tutco, Inc. Electrical resistance heater assembly and method of use

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2372832A (en) * 1942-05-18 1945-04-03 Chicago Flexible Shaft Co Convection heater
US2563449A (en) * 1951-08-07 Heater structure
FR1108032A (fr) * 1954-06-29 1956-01-09 Radiateur électrique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1185743B (de) * 1960-03-05 1965-01-21 Eichenauer Fa Fritz Hochbelastbarer Elektroheizkoerper
DE2530369C3 (de) * 1975-07-08 1984-01-12 Hillinger GmbH & Co, Vertriebs- und Verwaltungsgesellschaft, 7200 Tuttlingen Elektrischer Heizkörper
DE2944132A1 (de) * 1979-11-02 1981-05-14 Fa. Fritz Eichenauer, 6744 Kandel Elektrisches widerstandsheizelement
FR2497049A1 (fr) * 1980-12-19 1982-06-25 Ungari Serge Enroulement en fil resistant et sa disposition dans un radiateur electrique
DE3409495A1 (de) * 1984-03-15 1985-09-26 Petz Elektro Waerme Techn Elektrisches heizregister, insbesondere fuer heizluefter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2563449A (en) * 1951-08-07 Heater structure
US2372832A (en) * 1942-05-18 1945-04-03 Chicago Flexible Shaft Co Convection heater
FR1108032A (fr) * 1954-06-29 1956-01-09 Radiateur électrique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0719073A2 (fr) * 1994-12-08 1996-06-26 Ingo Schehr Elément chauffant électrique pour le chauffage d'un fluide gazeux
EP0719073A3 (fr) * 1994-12-08 1997-04-09 Ingo Schehr Elément chauffant électrique pour le chauffage d'un fluide gazeux

Also Published As

Publication number Publication date
IT8761905V0 (it) 1987-01-27
ATE63801T1 (de) 1991-06-15
EP0276755B1 (fr) 1991-05-22
IT211702Z2 (it) 1989-04-07
US4794227A (en) 1988-12-27
DE3862870D1 (de) 1991-06-27

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